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A coin kept on a horizontal rotating dis...

A coin kept on a horizontal rotating disc has its centre at a distance of 0.25 m from the axis of rotation of the disc. If `mu` is 0.2, then the angular velocity of the disc at which the coin willslip off, is

A

3.8 rad/s

B

2.8 rad/s

C

4.8 rad/s

D

5.8 rad/s

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